Bunsen burner.



No. 788,926. PATENTED MAY 2, 1905.

' H. .'E. MIELBNHAUSEN'..

BUNSEN BURNER.

APPLICATION FILED 13110.16. 1904.

UNITED STATES atented May 2, 1905.I l

PATENT OEEICE.

HENRY F. MIELENHAUSEN, OF NEW YORK, N. Y., ASSIGNOR TO EDWIN J. SELLEY, OF BROOKLYN, YORK.

BUNSEN BURNER.

SPECIFICATION forming part of Letters Patent No. 788,926, dated May 2, 1905.

Application iled December 16, 1904. Serial No. 237.116.

To all whom t may concern:

Be it known that I, HENRY F. MIELENHAU- SEN, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Bunsen Burner, of which the followingis a full, clear, and exact description.

The invention relates to burners, and especially to burners of the Bunsen type. Y

The invention is an improvement upon a burner which is intended especially for use in connection with gas-lights which employ incandescent mantles, the object of the improvements being to so construct the burner as to prevent smoking and bring about a more complete mixture between the gas and air before combustion.

The invention consists in the construction and combination of parts to be more fully described hereinafter, and definitely set forth in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in both gures.

Figure l is a side elevation of the burner, representing the parts carrying the mantle and chimney as removed; and Fig. 2 is a vertical section taken substantially upon the line 2 2 of Fig. l.

Referring more particulary to the parts, l represents the base of the burner, which consists of a tubular member, as shown, the same terminating above in a threaded nipple 2, to which attaches a cap 3, as shown. The purpose of this cap will be fully described hereinafter. Thebaselpresentsanannularshoulder 4, against which a threaded hub 5 seats itself, as shown most clearly in Fig. 2, the said hub constituting a part of the yoke 6, having vertical arms which are integral with the hub 5, as shown, and also integral with an upwardly-disposed sleeve 7. This sleeve 7 is internally threaded, as indicated, in order to facilitate the attachment of the mixing tu be or chamber 8.

As shown most clearly in Fig. 2, the upper extremity of the base 1 is substantially closed by a conical point or needle 9, which projects upwardly coaxially therewith; but around the base of this needle perforations l0 are provided, through which the gas in the base l finds its way. The upper wall ll of the cap 3 'is substantially conical, as shown, and at its apex is provided with a conical opening l2, through which projects the needle 9, as indicated. The cap 3 comprises also an annular head 13, which is preferably milled, as shown, for the purpose of enabling the cap to be screwed up or down upon the threaded nipple 2, as will be readily understood. If the cap 3 is screwed down sufficiently uponthe nipple 2, the conical opening 12 will eventually be closed by the needle 9, which projects therethrough. If, on the other hand, the cap is rotated in a direction to advance the same upwardly, the edective opening at 12 will be enlarged, and the proportion of gas escaping thereat would be increased. At the same time that the effective area of the opening 12 is increased the effective area around the upper wall of the cap where the surrounding air enters into the mixing-tube 8 would be decreased. If the cap were adjusted upwardly sufficiently, it would eventually seat itself at the lower extremity of the mixing-tube 8, at which time the mixture of gas and air passing up the mixing-tu be would contain a maximum proportion of gas and a minimum of air, as will be readily understood.

In order to prevent the burner from smoking or manifesting tendencies of that kind, the opposite sides of the sleeve 7 are preferably cut away, as shown most clearly in Fig. 1, so as to form concave recesses or notches 14. The presence of these notches prevents any possibility of the supply of air being totally cut off, and a suflicient quantity of air is always admitted into the mixing-tu be to enable perfect combustion to take place at the mouth of the burner. In this way the objection referred to is overcome, and the burner operates eiiiciently and burns with a clean bright iiame especially adapted for use in connection with mantle-lamps.

While the burner is intended especially for use in connection with gas-lamps of the class described, it is believed that the invention could be applied in various situations where complete combustion of the gas is desired to prevent Smoking.

Having thus described my invention, Iclaim as new and desire to secure by Letters Patentl. 1n a burner, in combination, a mixingtube, means for delivering gas at the lower extremity of said tube, and a needle-valve for regulating the admission of gas into said tube and regulating the admission of air .into the said tube, said tube having recesses formed by cutting away the lower extremity thereof admitting an increased 'quantity of air.

2. ln a gas-burner, in combination, a mixing-tube, a yoke, having a sleeve in which said mixing-tube is attached, a base attaching to said yoke and adapted to deliver gas' at the lower portion of said sleeve., and a needlevalve formed at thev upper extremity of said base and comprising an adjustable cap regulating the supply of gas and regulating the admission of air through said sleeve, the lower edge of said sleeve being cut away on opposite sides to admit an increased quantity of air.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.v

HENRY F. MIELENHAUSEN. Witnesses:

T. I. KEILY, WM. H. MIELENHAUSEN. 

